Two of the most important units in physics are the Newton (unit of force) and the Horsepower (unit of power). Here is everything you need to know.
1 Newton = 1 kg·m/s².
1 Horsepower (hp) = 746 Watts.
Newton Named After: Sir Isaac Newton.
Horsepower Coined By: James Watt.
Gravity on 1 kg mass = ~9.8 Newtons.
Definition: 1 Newton is the force required to give a mass of 1 kilogram an acceleration of 1 metre per second squared.
Formula: F = ma 1 N = 1 kg × 1 m/s² = 1 kg·m/s²
Everyday Example: The force of gravity on a 100g apple is approximately 1 Newton.
1 Horsepower (hp) = 746 Watts
Historically, James Watt defined 1 horsepower as the power needed to lift 33,000 pounds by 1 foot in 1 minute — roughly the estimated power of a strong draft horse.
Metric Horsepower: 1 PS (Pferdestärke) = 735.5 Watts (used in European car ratings).
Car Engines: A 100 hp car engine produces approximately 74,600 Watts (74.6 kW) of power.
1 Newton = 1 kg·m/s² — the force needed to accelerate 1 kg at 1 m/s².
1 horsepower = 746 Watts.
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